Automobile heater



March 1, 1921. 1,619,116

E'. P. GRAY AUTOMOBILE HEATER original Fyed Feb. 1'7, 1923l 2 sheets-sheet 1 ATTORNEY.

Mgrch r1, 1927.

E. P. GRAY AuToosILs HEATER l v oriwlz Filed Feb. 1923 2 sheets sheet 2 INVENTOR. 1

c 1' u 6' u A TTORNE Y.

Patented Mar. l, 1927.

PATENT OFFICE.

UNITED" STATES EMMT IP. GRAY, F DETROIT, MICHIGAN.

AUTOMOBILE HEATER.

original application led February 17, 1923, Serial No. 619,745. Divided and thisl application led October l This invention relates to heaters and the object of the invention is to provide a heater for vclosed automobile' bodies utilizing the exhaust gases of the automobile engine to produce heat. This application is a division of my application entltled Exhaust heater iled Feb. 17, 1923, Serial No.` 619,745. yAnother object of the invention is to pro4 vide a heater of the character described which may also be used as a ventilator for the interior of the automobile body the arrangement being such that heated fresh air is continually passed into thi automobile. A further object of the invention is to provide a heater from which soot may be easily removed and having an operating member' which may be easily actuated to turn the heater on or oii. Another object of the invention is to provide a heater arranged to prevent the sound of the explosions of the internal combustion engine from being communicated to the interior of the automobile body through the heater. A further object of the invention is to rovidea heater hav- 7.5 ing a casing from whlch dirt orl'other substance may bev removed and in whichv the area ofthe openings for allowing an ingress of airmay be adjusted. These objects and `the several novel features of the invention are hereinafter umore fully described andv claimed, and the preferred form of construction by which these objects are attained is shown in the accompanying gdrawings in which-'- v f v Fig. 1-is a plan view of a heater embody invmy invention..

1g. 2 1s a. sectiontakenon line 2 -2 of -Fig. 1. .Y Fig. 3 is a. section taken on line 3-.3 of Fig. 2. f

Fig. 4 is a. view of the under side ofthe heating chamber showing the inlet and exhaust ports.

Fig. 5 is asimilar view with the intake connection removed to show the valve construction. f

6 is a. section taken on line 6-6 of Fig.3. v

Fig 7 is a. view showing the connection of he heater to an exhaust pipe.

Fig. 8 is a plan view of the casing for the heater. `As shown in Figs. 2,3 and 8, a sheet metal casing 1 is lwhich is adapted to fit in a rectangular aperthe interior of shown in Fig. 7 to support the casing. As

.to fit within the'casing 1 and comprises a provided for the heater Serial No. 671,315.

ture provided therefor inthe floor of the automobile body, and the casing 1 is provlded with flanges 2 and 3 which are adapted to rest on the floor 4 of the automobile as shown in Fig. 8, the bottom of the casing 1 1s provided with a series of apertures 5 andv a circular sheet metalv plate 6. is pivotally mounted in the bottom of the casing 1 by means of a rivet 7. The plate 6 is provided with a series of apertures 8 and a clip 9 pis secured to the plate 6 a-nd is provided with .adepending end 104 extending downwardly through one of the apertures 5. This clip 9 is adapted .to engage either side of the aperture 5 to limit rotation of the plate 6 on its pivot, and the depending end 10 provides a means by which the plate 6 may be turned to the open or closed position from underneath the'automobile. A lug 11 is also e secured to-fthe plate 6 and is provided with 4an upwardly extending end 12 by which the plate may be turned from above to the open or closed position. The heater is adapted cast aluminum coil 13 having ns 14 on the upper side thereof. The heating coil 13, as shown in Fig. 5, is provided with aninlet opening 47 and the casing is provided with.

a Hat ground face 15 about the inlet opening 35 47 over which a valve`16 is movable. This flat face 15 is provided with a' series of threaded apertures 17 by means of which a casing 18, shown in Fig. 4, maybe secured over the valve 16 bythe :screws 19. This valve is positioned on the underside of the heating coil vand the casing 18 is provided with'a depending annular ilange 20 to which the inlet line 21 shown in Fig. 7 is adapted to be connected. This inlet line 21 as shown 95 in Fig. 7 is connected to the exhaust pipe 22. Y As shown inrFig. 2 the valve 16 which is movable over .the fiat face 15 is secured to a stem 23 which is rotatably mounted in the body of the heating coil and the heating coil 100 is provided with a conical recess in which. an asbestos packing 24is positioned to prevent leakage of the gas about the valve stem and a washer 25 is positioned over the packing 24 and is held in position by the coiled 105 spring 26 thus 4preventing displacement of the packing. The stem 23 at the upper end is secured in a rotating head 27 for the valve and this rotating head'27, as shown in Figs.

-1 and 2, extends Hush with the oor plate 110 shown in Fig. v3, are provided with aperexhaust port. heater the gases 28 and is provided with lugs 29 by which. the operator may position his foot on the head 27 and turn the valve to the open or closed position, the floor plate 28 being provided with the words On and OE and the valve head being provided with an arrow 30 to indicate the position of the valve as shopffn in Fig. 1. This floor plate 28 is provideiifiwith a grating and the heating coil vis secured thereto by means of the screws 31 which connect the fioor plate to the lugs 32 of the heating coil as shown in Figs. 2 and 3. The opposite sides of the f'loor plate as shown in Fig. 1 are provided with apertures 33 and the fianges 3 of the casing 1,

tures 34 and when the parts are positioned together as shown in Figs. 2 and 7 the apertures and 34 are brought to registration and screws may be passed therethrough to secure the heater to the, floor. The casing 1 is provided with apertures 35 and 36 shown in Fig. 8 through which the annular flange 37 about the exhaust port is connected to the tubing 38 which provides an exhaust for the heater. When the valve 16 is opened as shown in Figs. 3, 4 and 5 the exhaust gases from the exhaust pipe may pass through the inlet aperture 47 into the interior of the heating coil and the exhaust gases fiowing into the heating coil are divided by the partition 39 shown in Figs. 3 and 6 and fiow through the two chambers 40 and 41 thus formed. The artition 39, as shown in Fig. 3, terminates s ort of the end of the casing and .allows the gas to pass from the chamber 41 around the end of the partition 39 where it is again divided by the .partition 42 and the gas flowing through the chamber 40 is also further broken up and divided by the partition 42 so that the gasespass /through the chambers 43 and 44 thus formed and out through the exhaust port'37. The

partition 42 extends to the end of the exhaust port 37 as shown in Fig. 3 so that the gases in the chamber 43 have slightly further to travel than the gases in the chamber 44 and prevents the gases from favoring one chamber or the other in passing to the In passing through this are broken up and expanded so that the heater acts similar to 'a muf- 'fier and ieduces the sound of the separate explosions. It will be noted from- Figs. 2 and 3 that-the heating coil is provided with an end plate 45 which is bolted in placca., and is` rovlded with a packing 46 to pr-vent lea age of exhaust gases. By removing the bolts the plate45 may be removed to allow the chambers 40, 41, 43 and 44 to be easily cleaned out with a wire brush to remove soot 'and carbon deposits. which sometimes accumulate in sufficient quantities to clog u the passageways particularly when used wit an engine which tends to pump e611'.

the end of one of the legs,

mosphere. By turning the disc 6 so that the apertures'8 register with the apertures 5 a ventilator is provided for the automobile which will be understood more particularly from Fig. 2. As the heating coil 13 becomes hot the air thereabout is heated and passes up through the apcrtured floor plate 28 and as this air passes upwardly fresh air is drawn upwardly through the apertures 5 and 8 about the heating coil and thence to the interior of the automobile. The disc 6 mayI be turned to regulate the size of the openings provided by the apertures 5 and 8 so that the supply of fresh air admitted to the automobile body may be regulated to a nicety and whenV thedisc 6 is in the open position any dirt or foreign matter falling through the grating is moved about by the vibrations of the automobile and drop out through the apertures 5 and 8.

From the foregoing description it becomes evident that the device is very simple and efficient in operation, will not easily get out of order, is composed of few parts and is of consequent low manufacturing cost and provides 'a device which accomplishes the objects described.

-Having thus fully described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent vof the United States is 1. A heater for utilizing the exhaust gases of an internal combustion engine, compris? ing a hollow casing, a fioor plate secured to the top of the casing and having a multiplicity of apertures therethrough open to the casing, a hollow U-shaped conduit for exhaust gases having the legs thereof arranged in a horizontal plane, a partition in each leg forming longitudinal chambers in the interior, said conduit having an inlet port at an exhaust rt at the end of the other leg, the bottom o y the casing being provided with a pair of apertures each substantiall a port, a hollow mem r covering .the inlet port and providing a chamber formed with a hollow extension fory connection of a conduit, a valve mounted in the said chamber movable in a horizontal plane to cover or uncover the said inlet port, a Avalve operating plate rotatably mounted in an aperture therefor provided in the fioor plate, and a in registration with i vertical rod connecting the plate with thethe major the .said inlet port,

. ahollo-w casing,an apertured oor plate pro-y vlding a cover therefor,

port having a raised wall provided with a ground face about the inlet port, the two legs of the said conduit being spaced apart for portion of their length and oc cupy'ing substantially the same lhorizontal plane, a partition in'each leg of the said conduit extending part way of the length there.-

of providing two chambers in each leg both open t0 a common passageway connecting the legs, a valve movable to cover or uncover asp-ring for holding the valve in contact withthe ground face about the inlet port, a ydetachable casing housing the valve providing for the connection of an exhaust conduit, and a rotatable valve operating plate supported 'in the ioor plate.

. 3. A heater for utilizing the exhaust gases of an internal combustion engine comprising a hollow casing, consisting of a hollow conduit through which the exhaust gases may pass, said conduit having Van inlet port at one end and an exhaust port at the other, a recessed ycasing attached to the inlet port end of the conduit and providing a chamber thereabout, said second casing being formed for the attachment of an exhaust gas conduit, the wall of the inlet end of the conduit within the said chamber having an aperture at one side of the interior of the chamber, a valve plate rotatable upon the said wall and adapted to be turned to cover or uncover the said opening, a stern extendingupwardly from the a heating element therein said valve, and means connected with the stern for operating the valve.

In testimonywhereof, I sign this specification.

EMMET iP. GRAY. 

